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<a name="1" href="#1">1</a>   <em class="comment">/*</em>
<a name="2" href="#2">2</a>   <em class="comment"> * $Header$</em>
<a name="3" href="#3">3</a>   <em class="comment"> * $Revision: 1258 $</em>
<a name="4" href="#4">4</a>   <em class="comment"> * $Date: 2006-11-13 14:38:17 -0800 (Mon, 13 Nov 2006) $</em>
<a name="5" href="#5">5</a>   <em class="comment"> *</em>
<a name="6" href="#6">6</a>   <em class="comment"> * ====================================================================</em>
<a name="7" href="#7">7</a>   <em class="comment"> *</em>
<a name="8" href="#8">8</a>   <em class="comment"> * Copyright 2000-2002 bob mcwhirter &amp; James Strachan.</em>
<a name="9" href="#9">9</a>   <em class="comment"> * All rights reserved.</em>
<a name="10" href="#10">10</a>  <em class="comment"> *</em>
<a name="11" href="#11">11</a>  <em class="comment"> *</em>
<a name="12" href="#12">12</a>  <em class="comment"> * Redistribution and use in source and binary forms, with or without</em>
<a name="13" href="#13">13</a>  <em class="comment"> * modification, are permitted provided that the following conditions are</em>
<a name="14" href="#14">14</a>  <em class="comment"> * met:</em>
<a name="15" href="#15">15</a>  <em class="comment"> * </em>
<a name="16" href="#16">16</a>  <em class="comment"> *   * Redistributions of source code must retain the above copyright</em>
<a name="17" href="#17">17</a>  <em class="comment"> *     notice, this list of conditions and the following disclaimer.</em>
<a name="18" href="#18">18</a>  <em class="comment"> * </em>
<a name="19" href="#19">19</a>  <em class="comment"> *   * Redistributions in binary form must reproduce the above copyright</em>
<a name="20" href="#20">20</a>  <em class="comment"> *     notice, this list of conditions and the following disclaimer in the</em>
<a name="21" href="#21">21</a>  <em class="comment"> *     documentation and/or other materials provided with the distribution.</em>
<a name="22" href="#22">22</a>  <em class="comment"> * </em>
<a name="23" href="#23">23</a>  <em class="comment"> *   * Neither the name of the Jaxen Project nor the names of its</em>
<a name="24" href="#24">24</a>  <em class="comment"> *     contributors may be used to endorse or promote products derived </em>
<a name="25" href="#25">25</a>  <em class="comment"> *     from this software without specific prior written permission.</em>
<a name="26" href="#26">26</a>  <em class="comment"> * </em>
<a name="27" href="#27">27</a>  <em class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS</em>
<a name="28" href="#28">28</a>  <em class="comment"> * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED</em>
<a name="29" href="#29">29</a>  <em class="comment"> * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A</em>
<a name="30" href="#30">30</a>  <em class="comment"> * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER</em>
<a name="31" href="#31">31</a>  <em class="comment"> * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</em>
<a name="32" href="#32">32</a>  <em class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,</em>
<a name="33" href="#33">33</a>  <em class="comment"> * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR</em>
<a name="34" href="#34">34</a>  <em class="comment"> * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF</em>
<a name="35" href="#35">35</a>  <em class="comment"> * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</em>
<a name="36" href="#36">36</a>  <em class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</em>
<a name="37" href="#37">37</a>  <em class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</em>
<a name="38" href="#38">38</a>  <em class="comment"> *</em>
<a name="39" href="#39">39</a>  <em class="comment"> * ====================================================================</em>
<a name="40" href="#40">40</a>  <em class="comment"> * This software consists of voluntary contributions made by many</em>
<a name="41" href="#41">41</a>  <em class="comment"> * individuals on behalf of the Jaxen Project and was originally</em>
<a name="42" href="#42">42</a>  <em class="comment"> * created by bob mcwhirter &lt;bob@werken.com> and</em>
<a name="43" href="#43">43</a>  <em class="comment"> * James Strachan &lt;jstrachan@apache.org>.  For more information on the</em>
<a name="44" href="#44">44</a>  <em class="comment"> * Jaxen Project, please see &lt;<a href="http://www.jaxen.org/" target="alexandria_uri">http://www.jaxen.org/</a>>.</em>
<a name="45" href="#45">45</a>  <em class="comment"> *</em>
<a name="46" href="#46">46</a>  <em class="comment"> * $Id: PredicateSet.java 1258 2006-11-13 22:38:17Z elharo $</em>
<a name="47" href="#47">47</a>  <em class="comment"> */</em>
<a name="48" href="#48">48</a>  
<a name="49" href="#49">49</a>  
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>  <strong>package</strong> org.jaxen.expr;
<a name="52" href="#52">52</a>  
<a name="53" href="#53">53</a>  <strong>import</strong> java.io.Serializable;
<a name="54" href="#54">54</a>  <strong>import</strong> java.util.ArrayList;
<a name="55" href="#55">55</a>  <strong>import</strong> java.util.Collections;
<a name="56" href="#56">56</a>  <strong>import</strong> java.util.Iterator;
<a name="57" href="#57">57</a>  <strong>import</strong> java.util.List;
<a name="58" href="#58">58</a>  <strong>import</strong> org.jaxen.Context;
<a name="59" href="#59">59</a>  <strong>import</strong> org.jaxen.ContextSupport;
<a name="60" href="#60">60</a>  <strong>import</strong> org.jaxen.JaxenException;
<a name="61" href="#61">61</a>  <strong>import</strong> org.jaxen.function.BooleanFunction;
<a name="62" href="#62">62</a>  
<a name="63" href="#63">63</a>  <em>/**</em>
<a name="64" href="#64">64</a>  <em> * &lt;p></em>
<a name="65" href="#65">65</a>  <em> * Represents the collection of predicates that follow the node-test in a</em>
<a name="66" href="#66">66</a>  <em> * location path. </em>
<a name="67" href="#67">67</a>  <em> * &lt;/p></em>
<a name="68" href="#68">68</a>  <em> * </em>
<a name="69" href="#69">69</a>  <em> * &lt;p></em>
<a name="70" href="#70">70</a>  <em> * There is no rule that the same predicate may not </em>
<a name="71" href="#71">71</a>  <em> * appear twice in an XPath expression, nor does this class enforce any such rule.</em>
<a name="72" href="#72">72</a>  <em> * This is implemented more as a list than a set. However, adding the swme predicate </em>
<a name="73" href="#73">73</a>  <em> * twice should have no effect on the final result other than slowing it down.</em>
<a name="74" href="#74">74</a>  <em> * &lt;/p></em>
<a name="75" href="#75">75</a>  <em> */</em>
<a name="76" href="#76">76</a>  <strong>public</strong> <strong>class</strong> <a href="../../../org/jaxen/expr/PredicateSet.html">PredicateSet</a> implements Serializable
<a name="77" href="#77">77</a>  {
<a name="78" href="#78">78</a>  
<a name="79" href="#79">79</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = -7166491740228977853L;
<a name="80" href="#80">80</a>      
<a name="81" href="#81">81</a>      <strong>private</strong> List predicates;
<a name="82" href="#82">82</a>  
<a name="83" href="#83">83</a>      <em>/**</em>
<a name="84" href="#84">84</a>  <em>     * Create a new empty predicate set.</em>
<a name="85" href="#85">85</a>  <em>     */</em>
<a name="86" href="#86">86</a>      <strong>public</strong> <a href="../../../org/jaxen/expr/PredicateSet.html">PredicateSet</a>()
<a name="87" href="#87">87</a>      {
<a name="88" href="#88">88</a>          <strong>this</strong>.predicates = Collections.EMPTY_LIST;
<a name="89" href="#89">89</a>      }
<a name="90" href="#90">90</a>  
<a name="91" href="#91">91</a>      <em>/**</em>
<a name="92" href="#92">92</a>  <em>     * Add a predicate to the set.</em>
<a name="93" href="#93">93</a>  <em>     * </em>
<a name="94" href="#94">94</a>  <em>     * @param predicate the predicate to be inserted</em>
<a name="95" href="#95">95</a>  <em>     */</em>
<a name="96" href="#96">96</a>      <strong>public</strong> <strong>void</strong> addPredicate(<a href="../../../org/jaxen/expr/Predicate.html">Predicate</a> predicate)
<a name="97" href="#97">97</a>      {
<a name="98" href="#98">98</a>          <strong>if</strong> ( <strong>this</strong>.predicates == Collections.EMPTY_LIST )
<a name="99" href="#99">99</a>          {
<a name="100" href="#100">100</a>             <strong>this</strong>.predicates = <strong>new</strong> ArrayList();
<a name="101" href="#101">101</a>         }
<a name="102" href="#102">102</a> 
<a name="103" href="#103">103</a>         <strong>this</strong>.predicates.add( predicate );
<a name="104" href="#104">104</a>     }
<a name="105" href="#105">105</a> 
<a name="106" href="#106">106</a>     <em>/**</em>
<a name="107" href="#107">107</a> <em>     * Returns the list containing the predicates.</em>
<a name="108" href="#108">108</a> <em>     * This list is live, not a copy.</em>
<a name="109" href="#109">109</a> <em>     * </em>
<a name="110" href="#110">110</a> <em>     * @return a live list of predicates</em>
<a name="111" href="#111">111</a> <em>     */</em>
<a name="112" href="#112">112</a>     <strong>public</strong> List getPredicates()
<a name="113" href="#113">113</a>     {
<a name="114" href="#114">114</a>         <strong>return</strong> <strong>this</strong>.predicates;
<a name="115" href="#115">115</a>     }
<a name="116" href="#116">116</a> 
<a name="117" href="#117">117</a>     <em>/**</em>
<a name="118" href="#118">118</a> <em>     * Simplify each of the predicates in the list.</em>
<a name="119" href="#119">119</a> <em>     */</em>
<a name="120" href="#120">120</a>     <strong>public</strong> <strong>void</strong> simplify()
<a name="121" href="#121">121</a>     {
<a name="122" href="#122">122</a>         Iterator  predIter = <strong>this</strong>.predicates.iterator();
<a name="123" href="#123">123</a>         <a href="../../../org/jaxen/expr/Predicate.html">Predicate</a> eachPred = <strong>null</strong>;
<a name="124" href="#124">124</a> 
<a name="125" href="#125">125</a>         <strong>while</strong> ( predIter.hasNext() )
<a name="126" href="#126">126</a>         {
<a name="127" href="#127">127</a>             eachPred = (Predicate) predIter.next();
<a name="128" href="#128">128</a>             eachPred.simplify();
<a name="129" href="#129">129</a>         }
<a name="130" href="#130">130</a>     }
<a name="131" href="#131">131</a> 
<a name="132" href="#132">132</a>     <em>/**</em>
<a name="133" href="#133">133</a> <em>     * Returns the XPath string containing each of the predicates.</em>
<a name="134" href="#134">134</a> <em>     * </em>
<a name="135" href="#135">135</a> <em>     * @return the XPath string containing each of the predicates</em>
<a name="136" href="#136">136</a> <em>     */</em>
<a name="137" href="#137">137</a>     <strong>public</strong> String getText()
<a name="138" href="#138">138</a>     {
<a name="139" href="#139">139</a>         StringBuffer buf = <strong>new</strong> StringBuffer();
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>         Iterator  predIter = <strong>this</strong>.predicates.iterator();
<a name="142" href="#142">142</a>         <a href="../../../org/jaxen/expr/Predicate.html">Predicate</a> eachPred = <strong>null</strong>;
<a name="143" href="#143">143</a> 
<a name="144" href="#144">144</a>         <strong>while</strong> ( predIter.hasNext() )
<a name="145" href="#145">145</a>         {
<a name="146" href="#146">146</a>             eachPred = (Predicate) predIter.next();
<a name="147" href="#147">147</a>             buf.append( eachPred.getText() );
<a name="148" href="#148">148</a>         }
<a name="149" href="#149">149</a> 
<a name="150" href="#150">150</a>         <strong>return</strong> buf.toString();
<a name="151" href="#151">151</a>     }
<a name="152" href="#152">152</a> 
<a name="153" href="#153">153</a>     <em>/**</em>
<a name="154" href="#154">154</a> <em>     * &lt;p>Returns true if any of the supplied nodes satisfy </em>
<a name="155" href="#155">155</a> <em>     * all the predicates in the set. Returns false if none of the supplied</em>
<a name="156" href="#156">156</a> <em>     * nodes matches all the predicates in the set. Returns false if the </em>
<a name="157" href="#157">157</a> <em>     * node-set is empty.&lt;/p></em>
<a name="158" href="#158">158</a> <em>     * </em>
<a name="159" href="#159">159</a> <em>     * @param contextNodeSet the nodes to test against these predicates</em>
<a name="160" href="#160">160</a> <em>     * @param support ????</em>
<a name="161" href="#161">161</a> <em>     * @return true if any node in the contextNodeSet matches all the predicates</em>
<a name="162" href="#162">162</a> <em>     * @throws JaxenException</em>
<a name="163" href="#163">163</a> <em>     */</em>
<a name="164" href="#164">164</a>     <strong>protected</strong> <strong>boolean</strong> evaluateAsBoolean(List contextNodeSet,
<a name="165" href="#165">165</a>                                       <a href="../../../org/jaxen/ContextSupport.html">ContextSupport</a> support) throws JaxenException
<a name="166" href="#166">166</a>     {
<a name="167" href="#167">167</a>         <strong>return</strong> anyMatchingNode( contextNodeSet, support );
<a name="168" href="#168">168</a>     }
<a name="169" href="#169">169</a> 
<a name="170" href="#170">170</a>    <strong>private</strong> <strong>boolean</strong> anyMatchingNode(List contextNodeSet, <a href="../../../org/jaxen/ContextSupport.html">ContextSupport</a> support)
<a name="171" href="#171">171</a>      throws <a href="../../../org/jaxen/JaxenException.html">JaxenException</a> {
<a name="172" href="#172">172</a>         <em class="comment">// Easy way out (necessary)</em>
<a name="173" href="#173">173</a>         <strong>if</strong> (predicates.size() == 0) {
<a name="174" href="#174">174</a>             <strong>return</strong> false;
<a name="175" href="#175">175</a>         }
<a name="176" href="#176">176</a>         Iterator predIter = predicates.iterator();
<a name="177" href="#177">177</a> 
<a name="178" href="#178">178</a>         <em class="comment">// initial list to filter</em>
<a name="179" href="#179">179</a>         List nodes2Filter = contextNodeSet;
<a name="180" href="#180">180</a>         <em class="comment">// apply all predicates</em>
<a name="181" href="#181">181</a>         <strong>while</strong>(predIter.hasNext()) {
<a name="182" href="#182">182</a>             <strong>final</strong> <strong>int</strong> nodes2FilterSize = nodes2Filter.size();
<a name="183" href="#183">183</a>             <em class="comment">// Set up a dummy context with a list to hold each node</em>
<a name="184" href="#184">184</a>             <a href="../../../org/jaxen/Context.html">Context</a> predContext = <strong>new</strong> <a href="../../../org/jaxen/Context.html">Context</a>(support);
<a name="185" href="#185">185</a>             List tempList = <strong>new</strong> ArrayList(1);
<a name="186" href="#186">186</a>             predContext.setNodeSet(tempList);
<a name="187" href="#187">187</a>             <em class="comment">// loop through the current nodes to filter and add to the</em>
<a name="188" href="#188">188</a>             <em class="comment">// filtered nodes list if the predicate succeeds</em>
<a name="189" href="#189">189</a>             <strong>for</strong> (<strong>int</strong> i = 0; i &lt; nodes2FilterSize; ++i) {
<a name="190" href="#190">190</a>                 Object contextNode = nodes2Filter.get(i);
<a name="191" href="#191">191</a>                 tempList.clear();
<a name="192" href="#192">192</a>                 tempList.add(contextNode);
<a name="193" href="#193">193</a>                 predContext.setNodeSet(tempList);
<a name="194" href="#194">194</a>                 <em class="comment">// ????</em>
<a name="195" href="#195">195</a>                 predContext.setPosition(i + 1);
<a name="196" href="#196">196</a>                 predContext.setSize(nodes2FilterSize);
<a name="197" href="#197">197</a>                 Object predResult = ((Predicate)predIter.next()).evaluate(predContext);
<a name="198" href="#198">198</a>                 <strong>if</strong> (predResult instanceof Number) {
<a name="199" href="#199">199</a>                     <em class="comment">// Here we assume nodes are in forward or reverse order</em>
<a name="200" href="#200">200</a>                     <em class="comment">// as appropriate for axis</em>
<a name="201" href="#201">201</a>                     <strong>int</strong> proximity = ((Number) predResult).<strong>int</strong>Value();
<a name="202" href="#202">202</a>                     <strong>if</strong> (proximity == (i + 1)) {
<a name="203" href="#203">203</a>                         <strong>return</strong> <strong>true</strong>;
<a name="204" href="#204">204</a>                     }
<a name="205" href="#205">205</a>                 }
<a name="206" href="#206">206</a>                 <strong>else</strong> {
<a name="207" href="#207">207</a>                     Boolean includes =
<a name="208" href="#208">208</a>                         BooleanFunction.evaluate(predResult,
<a name="209" href="#209">209</a>                                                 predContext.getNavigator());
<a name="210" href="#210">210</a>                     <strong>if</strong> (includes.booleanValue()) {
<a name="211" href="#211">211</a>                         <strong>return</strong> <strong>true</strong>;
<a name="212" href="#212">212</a>                     }
<a name="213" href="#213">213</a>                 }
<a name="214" href="#214">214</a>             }
<a name="215" href="#215">215</a>         }
<a name="216" href="#216">216</a>         
<a name="217" href="#217">217</a>         <strong>return</strong> false;
<a name="218" href="#218">218</a>     }
<a name="219" href="#219">219</a>    
<a name="220" href="#220">220</a>     
<a name="221" href="#221">221</a>     
<a name="222" href="#222">222</a>     
<a name="223" href="#223">223</a>    <em>/**</em>
<a name="224" href="#224">224</a> <em>    * &lt;p>Returns all of the supplied nodes that satisfy </em>
<a name="225" href="#225">225</a> <em>    * all the predicates in the set. &lt;/p></em>
<a name="226" href="#226">226</a> <em>    * </em>
<a name="227" href="#227">227</a> <em>    * @param contextNodeSet the nodes to test against these predicates</em>
<a name="228" href="#228">228</a> <em>    * @param support ????</em>
<a name="229" href="#229">229</a> <em>    * @return all the nodes that match each of the predicates</em>
<a name="230" href="#230">230</a> <em>    * @throws JaxenException</em>
<a name="231" href="#231">231</a> <em>    */</em>
<a name="232" href="#232">232</a>    <strong>protected</strong> List evaluatePredicates(List contextNodeSet, <a href="../../../org/jaxen/ContextSupport.html">ContextSupport</a> support)
<a name="233" href="#233">233</a>             throws <a href="../../../org/jaxen/JaxenException.html">JaxenException</a> {
<a name="234" href="#234">234</a>         <em class="comment">// Easy way out (necessary)</em>
<a name="235" href="#235">235</a>         <strong>if</strong> (predicates.size() == 0) {
<a name="236" href="#236">236</a>             <strong>return</strong> contextNodeSet;
<a name="237" href="#237">237</a>         }
<a name="238" href="#238">238</a>         Iterator predIter = predicates.iterator();
<a name="239" href="#239">239</a> 
<a name="240" href="#240">240</a>         <em class="comment">// initial list to filter</em>
<a name="241" href="#241">241</a>         List nodes2Filter = contextNodeSet;
<a name="242" href="#242">242</a>         <em class="comment">// apply all predicates</em>
<a name="243" href="#243">243</a>         <strong>while</strong>(predIter.hasNext()) {
<a name="244" href="#244">244</a>             nodes2Filter =
<a name="245" href="#245">245</a>                 applyPredicate((Predicate)predIter.next(), nodes2Filter, support);
<a name="246" href="#246">246</a>         }
<a name="247" href="#247">247</a>         
<a name="248" href="#248">248</a>         <strong>return</strong> nodes2Filter;
<a name="249" href="#249">249</a>     }
<a name="250" href="#250">250</a>    
<a name="251" href="#251">251</a>     <strong>public</strong> List applyPredicate(<a href="../../../org/jaxen/expr/Predicate.html">Predicate</a> predicate, List nodes2Filter, <a href="../../../org/jaxen/ContextSupport.html">ContextSupport</a> support)
<a name="252" href="#252">252</a>             throws <a href="../../../org/jaxen/JaxenException.html">JaxenException</a> {
<a name="253" href="#253">253</a>         <strong>final</strong> <strong>int</strong> nodes2FilterSize = nodes2Filter.size();
<a name="254" href="#254">254</a>         List filteredNodes = <strong>new</strong> ArrayList(nodes2FilterSize);
<a name="255" href="#255">255</a>         <em class="comment">// Set up a dummy context with a list to hold each node</em>
<a name="256" href="#256">256</a>         <a href="../../../org/jaxen/Context.html">Context</a> predContext = <strong>new</strong> <a href="../../../org/jaxen/Context.html">Context</a>(support);
<a name="257" href="#257">257</a>         List tempList = <strong>new</strong> ArrayList(1);
<a name="258" href="#258">258</a>         predContext.setNodeSet(tempList);
<a name="259" href="#259">259</a>         <em class="comment">// loop through the current nodes to filter and add to the</em>
<a name="260" href="#260">260</a>         <em class="comment">// filtered nodes list if the predicate succeeds</em>
<a name="261" href="#261">261</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; nodes2FilterSize; ++i) {
<a name="262" href="#262">262</a>             Object contextNode = nodes2Filter.get(i);
<a name="263" href="#263">263</a>             tempList.clear();
<a name="264" href="#264">264</a>             tempList.add(contextNode);
<a name="265" href="#265">265</a>             predContext.setNodeSet(tempList);
<a name="266" href="#266">266</a>             <em class="comment">// ????</em>
<a name="267" href="#267">267</a>             predContext.setPosition(i + 1);
<a name="268" href="#268">268</a>             predContext.setSize(nodes2FilterSize);
<a name="269" href="#269">269</a>             Object predResult = predicate.evaluate(predContext);
<a name="270" href="#270">270</a>             <strong>if</strong> (predResult instanceof Number) {
<a name="271" href="#271">271</a>                 <em class="comment">// Here we assume nodes are in forward or reverse order</em>
<a name="272" href="#272">272</a>                 <em class="comment">// as appropriate for axis</em>
<a name="273" href="#273">273</a>                 <strong>int</strong> proximity = ((Number) predResult).<strong>int</strong>Value();
<a name="274" href="#274">274</a>                 <strong>if</strong> (proximity == (i + 1)) {
<a name="275" href="#275">275</a>                     filteredNodes.add(contextNode);
<a name="276" href="#276">276</a>                 }
<a name="277" href="#277">277</a>             }
<a name="278" href="#278">278</a>             <strong>else</strong> {
<a name="279" href="#279">279</a>                 Boolean includes =
<a name="280" href="#280">280</a>                     BooleanFunction.evaluate(predResult,
<a name="281" href="#281">281</a>                                             predContext.getNavigator());
<a name="282" href="#282">282</a>                 <strong>if</strong> (includes.booleanValue()) {
<a name="283" href="#283">283</a>                     filteredNodes.add(contextNode);
<a name="284" href="#284">284</a>                 }
<a name="285" href="#285">285</a>             }
<a name="286" href="#286">286</a>         }
<a name="287" href="#287">287</a>         <strong>return</strong> filteredNodes;
<a name="288" href="#288">288</a>     }
<a name="289" href="#289">289</a>     
<a name="290" href="#290">290</a> }
</pre>
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